Comparisons between computer simulations of room acoustical parameters and those measured in concert halls

Rindel, Jens Holger; Shiokawa, Hiroyoshi; Christensen, Claus Lynge; Gade, Anders

doi:10.1121/1.425555

Cited by 6 publications

(4 citation statements)

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“…The models made simplify the interior space, eliminating any elements which, due to their smaller size, are not decisive when it comes to obtaining adequate results. However, the acoustic properties of the materials of the different surfaces (absorption and scattering) are more decisive for obtaining adequate results [26]. The environmental conditions (humidity and temperature), as well as the background noise obtained from in situ measurements, were considered for the simulations with TUCT algorithm 2 ( Table 2).…”

Section: Methodsmentioning

confidence: 99%

Evolutionary Analysis of the Acoustics of the Baroque Church of San Luis de los Franceses (Seville)

2021

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In the 16th century the Society of Jesus built a large number of churches following the Tridentine model of a Latin cross and a single nave. However, the shift towards this model did not entail the abandonment of the central floor plan, especially in the 17th century. The acoustics of these spaces can present phenomena linked to focalizations which increase the sound pressure level. The church of San Luis de los Franceses, built by the Jesuits for their novitiate in Seville (Spain), is an example of a Baroque church with a central floor plan. Although the church has hosted different congregations since its inauguration it is currently desacralized and used for theatres and concerts. The acoustics of this church were studied by the authors through in situ measurements and virtual models. The main objective was to analyse the evolution and perception of its sound field from the 18th to 21st centuries, considering the different audience distributions and sound sources and the modifications in furniture and coatings. Analysis of the evolution of its sound field shows that the characteristics have remained stable, with a notable influence of the dome on the results for the different configurations studied.

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Section: Methodsmentioning

confidence: 99%

Evolutionary Analysis of the Acoustics of the Baroque Church of San Luis de los Franceses (Seville)

2021

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“…The comparison of results in Table 1 is also presented in terms of relative error [45,46] considering the Just Noticeable Difference (JND) of each parameter. In psycho-physics the JND is the smallest difference in sensation that a hearer can perceive.…”

Section: Different Spacesmentioning

confidence: 99%

Low Cost Omnidirectional Sound Source Utilizing a Common Directional Loudspeaker for Impulse Response Measurements

Papadakis

Stavroulakis

2018

Applied Sciences

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Alternative low-cost sources (e.g., balloons, gun fires) are used for impulse response measurements when a dodecahedron speaker is not available. This study sets to explore the applicability of a method utilizing a common directional loudspeaker as a sound source. For this purpose measurements were performed in three spaces with three different common directional loudspeakers. Different placements of the loudspeakers were performed (twelve positions similar to the twelve positions of the faces of a dodecahedron speaker, different rotations of the loudspeakers for a total sum of twenty six and fourteen positions). The impulse responses obtained were added up creating a single impulse response for each case. Comparisons of the acoustic parameters measured with the proposed method and with a dodecahedron speaker are presented and suggest the expected mean absolute error and standard deviation for similar measurements. Reverberation time measurements show a mean absolute error of less than 0.08 s, as compared with measurements with a dodecahedron speaker. The proposed method can be the primary method for measuring impulse responses when a dodecahedron speaker is not available. Suggested improvements may lead to better omnidirectionality as compared with a dodecahedron loudspeaker, and set the method applicable to be utilized for auralization purposes.

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“…2 This development in digital tectonics has so far primarily been the case in connection to the structural aspects of building but it might apply to other fields such as room acoustics. Several studies have shown the reliability of simulation programmes for calculation of room acoustic parameters 3,4 and recently isolated attempts have been made to explore the possibility of using computer programming in the initial design stages. One of these attempts is the programme ACOUSALLE, 5 which can support decisions in the first phases of the design but which, for the time being, is limited to operating with shoebox room shapes.…”

Section: Introductionmentioning

confidence: 99%

From Architectural Acoustics to Acoustical Architecture Using Computer Simulation

Schmidt

Kirkegaard

2005

Building Acoustics

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Architectural acoustics design has in the past been based on simple design rules. However, with a growing complexity in architectural acoustics and the emergence of room acoustic simulation programmes with considerable potential, it is now possible to subjectively analyse and evaluate acoustic properties prior to the actual construction of a building. With the right tools applied, acoustic design can become an integral part of the architectural design process. The aim of this paper is to investigate the field of application that an acoustic simulation programme can have during an architectural acoustic design process and to set up a strategy to develop future programmes. The emphasis is put on the first three out of four phases in the working process of the architect and a case study is carried out in which each phase is represented by typical results-as exemplified with reference to the design of Bagsvaerd Church by Jørn Utzon. The paper discusses the advantages and disadvantages of the programme in each phase compared to the works of architects not using acoustic simulation programmes. The conclusion of the paper points towards the need to apply the acoustic simulation programmes to the first phases in the architectural process and set out a reverse strategy for simulation programmes to do so-from developing acoustics from given spaces to developing spaces from given acoustics.

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Comparisons between computer simulations of room acoustical parameters and those measured in concert halls

Cited by 6 publications

References 0 publications

Evolutionary Analysis of the Acoustics of the Baroque Church of San Luis de los Franceses (Seville)

Evolutionary Analysis of the Acoustics of the Baroque Church of San Luis de los Franceses (Seville)

Low Cost Omnidirectional Sound Source Utilizing a Common Directional Loudspeaker for Impulse Response Measurements

From Architectural Acoustics to Acoustical Architecture Using Computer Simulation

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